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dc.contributor.authorScheermeyer, Elly
dc.contributor.authorAgranovski, Igor E
dc.date.accessioned2017-05-03T13:48:20Z
dc.date.available2017-05-03T13:48:20Z
dc.date.issued2009
dc.date.modified2010-06-24T05:22:20Z
dc.identifier.issn0021-8502
dc.identifier.doi10.1016/j.jaerosci.2009.06.003
dc.identifier.urihttp://hdl.handle.net/10072/30657
dc.description.abstractFungi havesignificanthealtheffectsvaryingfromseriousallergicreactionsfrominhalationto toxic effectsandevenfatalinfections.Indoorandoutdoorsamplingmayidentifypotentially contaminated environments,butsamplingtechniquesneedrefiningtosetrisklevelsregarding occupational exposureortoassessandanalysesuddenoutbreaksoffungi.Aslittleisknown of thesporulationanddispersaldynamicsoffungi,wehaveexperimentedwithaerosolizing fungal sporesfromculturesgrowninstandard9cmPetridishesfor3-10husinganewdevice that incorporatesvibration.Weevaluatedtheeffectoftheairflowandfrequencyonaquan- tity andpatternofsporesaerosolized.Frequencyhadpositive,negativeornoeffect.Positive quantitative effectswerenotedin Aspergillus versicolor at 50Hz,in Aspergillus niger at 400Hz and at100-400Hzin Rhizopus. Aerosolizationof Aspergillus species droppedsignificantlyin the first20minandthenstabilisedfor2.5-3h.Afterthistimeperiod,thegenerationprocess became highlyunstablewithlargequantitiesofsmallparticlesproduced.Itcouldbeexplained by appearanceofcracksonthenutrientsurfaceduetodesiccationwithcorrespondingrelease of particlesofnutrienttotheaircarrier.For Rhizopus, theinitialsteepdecreaseinparticle generation forthefirst20minoftheprocesswasfollowedbyquitestablesporeproductionfor the following10hofprocessoperation.Therewerenocracksobservedonthenutrientsurface for theentire10hoperationofthedevice.Theairflowalsoaffectstheefficiencyofthespore release. Itwasfoundthatincreaseintheairflowwasassociatedwithmoreefficientsporulation from thenutrientdish.Ontheotherhand,thesizedistributioncurveoftheairbornespores produced athigherairflowswascorrespondinglyslightlyshiftedtowardslargersizes,which is relatedtolessefficientlooseningofsporesandcorrespondingincreaseinconcentrationof clumps consistingofmorethanonespore.Also,itwasfoundthatincubationoffungalcultures for extendedperiods(2-6weeks)ledtowardsproductionoflargernumbersofairbornefungal spores.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeUnited Kingdom
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom879
dc.relation.ispartofpageto889
dc.relation.ispartofissue10
dc.relation.ispartofjournalJournal of Aerosol Science
dc.relation.ispartofvolume40
dc.rights.retentionY
dc.subject.fieldofresearchPhysical chemistry
dc.subject.fieldofresearchAtmospheric sciences
dc.subject.fieldofresearchChemical engineering
dc.subject.fieldofresearchChemical engineering not elsewhere classified
dc.subject.fieldofresearchcode3406
dc.subject.fieldofresearchcode3701
dc.subject.fieldofresearchcode4004
dc.subject.fieldofresearchcode400499
dc.titleDesign and evaluation of a new device for fungal spore aerosolization for laboratory applications
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.facultyGriffith Sciences, Griffith School of Environment
gro.date.issued2009
gro.hasfulltextNo Full Text
gro.griffith.authorAgranovski, Igor E.


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